LobeHub has an unauthenticated authentication bypass on `webapi` routes via forgeable `X-lobe-chat-auth` header

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Summary

CVECVE-2026-39411
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-08 20:16:25 UTC
Updated2026-04-20 15:03:17 UTC
DescriptionLobeHub is a work-and-lifestyle space to find, build, and collaborate with agent teammates that grow with you. Prior to 2.1.48, the webapi authentication layer trusts a client-controlled X-lobe-chat-auth header that is only XOR-obfuscated, not signed or otherwise authenticated. Because the XOR key is hardcoded in the repository, an attacker can forge arbitrary auth payloads and bypass authentication on protected webapi routes. Affected routes include /webapi/chat/[provider], /webapi/models/[provider], /webapi/models/[provider]/pull, and /webapi/create-image/comfyui. This vulnerability is fixed in 2.1.48.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

EPSS: 0.000200000 probability, percentile 0.052930000 (date 2026-04-14)

Problem Types: CWE-287 | CWE-290 | CWE-345 | CWE-287 CWE-287: Improper Authentication | CWE-290 CWE-290: Authentication Bypass by Spoofing | CWE-345 CWE-345: Insufficient Verification of Data Authenticity

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
3.1[email protected]Secondary5MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED5MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Lobehub Lobehub All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Lobehub Lobehub affected < 2.1.48 Not specified

References

ReferenceSourceLinkTags
github.com/lobehub/lobehub/releases/tag/v2.1.48 [email protected] github.com Product
github.com/lobehub/lobehub/pull/13535 [email protected] github.com Issue Tracking
github.com/lobehub/lobehub/commit/3327b293d66c013f076cbc16cdbd05a61a3d0428 [email protected] github.com Patch
github.com/lobehub/lobehub/security/advisories/GHSA-5mwj-v5jw-5c97 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Vendor Advisory
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